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Whether you're planning your next flight on your European vacation or are just looking for a romantic weekend getaway, you'll find the cheapest flights from Belfast to London Heathrow at Skyscanner. Discover the best time to book flights to London or sign up for price alerts to make sure you'll always get the lowest price.

Belfast International Airport and London Heathrow

Belfast International Airport (BFS) is located 13 miles northwest of Belfast and is the busiest airport in Northern Ireland. The airport has one passenger terminal with two floors. Passengers flying to London will depart from the upper floor. Belfast International offers connecting and nonstop flights to London Heathrow nearly every day of the week. Multiple airlines fly to the British capital, including Aer Lingus, British Airways, Flybe, and KLM. Both Aer Lingus and British Airways offer direct flights to London Heathrow.

London Heathrow Airport (LHR) is the busiest airport in Europe by passenger traffic and is located 15 miles west of central London. The airport has four terminals. Aer Lingus passengers will arrive at Terminal 2, while those flying on British Airways will arrive at Terminal 5. When you land at London Heathrow, the fastest transfer to the city is via the Heathrow Express train. You can board the train at Terminals 2, 3, and 5. You'll also find a connecting train at Terminal 4. London Underground's Piccadilly Line is the cheapest way to get to London, but you could also take a taxi, bus, or rent a car.

Tips For Departing From Belfast International

Belfast International Airport recommends arriving at the airport at least two hours before your flight to London Heathrow to allow time for check-in and security. Be aware that check-in desks close between 40 minutes and an hour before the scheduled departure time depending on your airline. You'll need to have a valid passport for international travel, as well as a driver's license if you plan to rent a car in London. Once you check-in, you'll proceed to security. In addition to normal procedures, Belfast International uses body scanning technology. Passengers may be randomly selected for scanning.

What to Do at Belfast International Airport

While you wait to board your flight to London Heathrow, you can enjoy a variety of shopping and dining options at BFS. Pick up last-minute travel items or grab a new outfit for your vacation. You could also have a drink to calm your nerves or get some coffee to wake you up. Enjoy free Wi-Fi throughout the airport, or relax in the Causeway Lounge.

The Cities of Belfast and London

Temperatures in the cities of Belfast and London are very comparable, although summer is slightly warmer in London. The cost of living is higher in the UK capital. You'll need to convert your currency to pounds before you arrive in London, but a meal for two will cost about $20 more than it would in Belfast. Taxi fares are also significantly higher in London at over $8 per mile, compared to $1.64. Both cities are in the British Summer Time Zone, so there is no time difference.